package com.hx.haowumall.haowumallorder.config;

import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;

@Configuration
public class HaowuFeignConfig {

    @Bean("requestInterceptor")
    public RequestInterceptor requestInterceptor(){
        return new RequestInterceptor() {
            @Override
            public void apply(RequestTemplate requestTemplate) {
                //1、RequestContextHolder拿到刚进来的请求（保持上下文一致）
                ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
                if (attributes !=null){
                    HttpServletRequest request = attributes.getRequest();
                    if (request!=null){
                        //2、同步请求头数据和cookie
                        String cookie = request.getHeader("Cookie");
                        //3、给新请求放老Cookie
                        requestTemplate.header("Cookie",cookie);
                    }
                }

            }
        };
    }

}
